Storage that is no longer in use, needs to be reclaimed by the array. The process of reclaiming storage on an array can be intense on the array. To avoid any impact on regular I/O's to the array, the reclaim operation is made asynchronous. When a volume is deleted the space previously used by the volume is tracked for later asynchronous reclamation. This asynchronous reclamation is handled by vxrelocd
(or recovery) daemon.
To perform the reclaim operation during less critical time of the system can be controlled by the following two tunables reclaim_on_delete_wait_period
andreclaim_on_delete_start_time
.
The default value for these tunables are:
reclaim_on_delete_wait_period=1 reclaim_on_delete_start_time=22:00
By default, the vxrelocd
daemon runs everyday at 22:00 hours and reclaims storage on the deleted volume that are a one day old.